868=999-n

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Solution for 868=999-n equation:


Simplifying
868 = 999 + -1n

Solving
868 = 999 + -1n

Solving for variable 'n'.

Move all terms containing n to the left, all other terms to the right.

Add 'n' to each side of the equation.
868 + n = 999 + -1n + n

Combine like terms: -1n + n = 0
868 + n = 999 + 0
868 + n = 999

Add '-868' to each side of the equation.
868 + -868 + n = 999 + -868

Combine like terms: 868 + -868 = 0
0 + n = 999 + -868
n = 999 + -868

Combine like terms: 999 + -868 = 131
n = 131

Simplifying
n = 131

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